Definitely a lot sportier than the "Surf Jet" we used to have when I was little. Similar concept, but the technology has come a long way.
The surf jet I remember from the late 80s and early 90s in my childhood my parents had was basically a 3-4" thick surfboard that was made like a jet ski haul. It was about 8 feet long and had a pull start jet drive motor on the back of it. You had a safety lanyard around your leg and it had a remote throttle switch you held while you were on it so you could stand up on it and control your speed. Steering was just like you'd expect.
Basically it was a hybrid between a stand up paddleboard and a jet ski. That thing could haul faster than your own good. I remember going on it before with my dad, good times. Cool to see they are making a newer, more fun version, probably more safe too.

BTW: I think he sold it because if you got too close to the back you would burn yourself on the motor.